AISI 317 Stainless Steel vs. Type 1 Niobium
AISI 317 stainless steel belongs to the iron alloys classification, while Type 1 niobium belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is AISI 317 stainless steel and the bottom bar is Type 1 niobium.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 170 to 220 | |
| 79 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 110 |
| Elongation at Break, % | 35 to 55 | |
| 29 |
| Poisson's Ratio | 0.28 | |
| 0.4 |
| Shear Modulus, GPa | 79 | |
| 38 |
| Tensile Strength: Ultimate (UTS), MPa | 580 to 710 | |
| 140 |
| Tensile Strength: Yield (Proof), MPa | 250 to 420 | |
| 82 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 320 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 270 |
| Thermal Conductivity, W/m-K | 15 | |
| 52 |
| Thermal Expansion, µm/m-K | 17 | |
| 7.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.9 | |
| 8.6 |
| Embodied Water, L/kg | 160 | |
| 160 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 210 to 260 | |
| 35 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 150 to 430 | |
| 32 |
| Stiffness to Weight: Axial, points | 14 | |
| 6.8 |
| Stiffness to Weight: Bending, points | 25 | |
| 18 |
| Strength to Weight: Axial, points | 20 to 25 | |
| 4.6 |
| Strength to Weight: Bending, points | 20 to 22 | |
| 7.1 |
| Thermal Diffusivity, mm2/s | 4.1 | |
| 23 |
| Thermal Shock Resistance, points | 12 to 15 | |
| 13 |
Alloy Composition
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.010 |
| Chromium (Cr), % | 18 to 20 | |
| 0 |
| Hafnium (Hf), % | 0 | |
| 0 to 0.020 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0015 |
| Iron (Fe), % | 58 to 68 | |
| 0 to 0.0050 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0 |
| Molybdenum (Mo), % | 3.0 to 4.0 | |
| 0 to 0.010 |
| Nickel (Ni), % | 11 to 15 | |
| 0 to 0.0050 |
| Niobium (Nb), % | 0 | |
| 99.7 to 100 |
| Nitrogen (N), % | 0 to 0.1 | |
| 0 to 0.010 |
| Oxygen (O), % | 0 | |
| 0 to 0.015 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 to 0.0050 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Tantalum (Ta), % | 0 | |
| 0 to 0.1 |
| Titanium (Ti), % | 0 | |
| 0 to 0.020 |
| Tungsten (W), % | 0 | |
| 0 to 0.030 |
| Zirconium (Zr), % | 0 | |
| 0 to 0.020 |